一种基于身份的代理盲签名

An ID-based proxy blind signature scheme

代理签名与盲签名都是非常有用的密码学工具,在实际生活中有着广泛的应用。在代理签名中,原始签名人能将数字签名的权力委托给代理签名人;而在盲签名方案中,被签消息的内容对签名者是不可见的,签名被接受者得到后,签名者不能追踪签名。文中结合两者的优点,利用基于椭圆曲线上的Weil配对(WeilPairing)的双线性映射,在基于身份的数字签名的基础上,构造了一个基于ID的代理盲签名方案,并对其安全性进行了简要分析。

Proxy signature and blind signature are useful tools in cryptography. They both have wide applications in practice .With proxy signature, an original signatory can delegate his signing authority to a proxy signatory who signs a message on behalf of the original one. A blindly signed message cannot be known by the signatory who made the blind signature and the identity of the requester also cannot be traced. Based on bilinera projection of weil Pairing and an ID-based signature scheme, an ID-based proxy blind signature scheme was presented, which satisfies the security properties of both proxy signature scheme and blind signature scheme. A simple security analysis of the newly proposed scheme was also given.